Return-Path: <lancair.list-request@olsusa.com>
Received: from imo-d08.mx.aol.com ([205.188.157.40]) by truman.olsusa.com
          (Post.Office MTA v3.5.1 release 219 ID# 0-64832U3500L350S0V35)
          with ESMTP id com for <lancair.list@olsusa.com>;
          Mon, 31 Jan 2000 02:18:16 -0500
Received: from RWolf99@aol.com
	by imo-d08.mx.aol.com (mail_out_v24.8.) id k.de.b4e2bb (4441);
	Mon, 31 Jan 2000 02:23:27 -0500 (EST)
From: RWolf99@aol.com
Message-ID: <de.b4e2bb.25c6926f@aol.com>
Date: Mon, 31 Jan 2000 02:23:27 EST
Subject: Re:  Weight and balance
To: lancair.list@olsusa.com, alphadog@nii.net
X-Mailing-List: lancair.list@olsusa.com
Mime-Version: 1.0

          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
          <<  Lancair Builders' Mail List  >>
          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> 
>>

In a message dated 1/30/0 9:39:53 PM, you wrote:

<<It does not take a rocket scientist>>

I love this expression because, you see, I AM a rocket scientist!  Although 
"rocket science" is actually very cookbook, we don't want the world to know 
how simple it is, or they wouldn't pay us so much and we couldn't afford 
Lancairs!

What they mean in the manual is to record the weight at each scale, not the 
actual gear weight.  In other words, the weight ON the gear at each wheel.  
You have a scale under each wheel, no?  The total moment equals the weight on 
the nose gear scale times its distance from datum, plus the weight on one 
main gear times its distance from datum, plus the weight on the other main 
gear times its distance from datum.  You get the CG location by dividing this 
sum by the total weight.

Note that the "inches from datum" means inches aft of datum parallel to the 
longitudinal axis of the airplane, and not the actual distance from your 
datum point to the scale.  The spanwise component of distance doesn't matter. 
 (I think you probably already knew that.)

- Rob
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
LML website:   http://www.olsusa.com/Users/Mkaye/maillist.html
Builders' Bookstore:   http://www.buildersbooks.com/lancair

Please send your photos and drawings to marvkaye@olsusa.com.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>